CVE-2026-3237 - In affected versions of Octopus Server it was possible for a low privileged user to manipulate an API request to change the signing key expiration and revocation time frames via an API endpoint that had incorrect permission validation

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LOW

In affected versions of Octopus Server it was possible for a low privileged user to manipulate an API request to change the signing key expiration and revocation time frames via an API endpoint that had incorrect permission validation

Published Mar 17, 2026

2.3

LOW

CVSS 4.0

EPSS 0.25%

Description

In affected versions of Octopus Server it was possible for a low privileged user to manipulate an API request to change the signing key expiration and revocation time frames via an API endpoint that had incorrect permission validation. It was not possible to expose the signing keys using this vulnerability.

Affected products

Vendor Octopus Deploy Product Octopus Server Default
unaffected
- Version
  2023.0.0
  Status
  affected
  Constraints
  <2025.3.14731
- Version
  2025.4.0
  Status
  affected
  Constraints
  <2025.4.10359
- Version
  2026.1.0
  Status
  affected
  Constraints
  <2026.1.5571

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Octopus Deploy

Octopus Server

unaffected

Version	Status	Constraints
2023.0.0	affected	<2025.3.14731
2025.4.0	affected	<2025.4.10359
2026.1.0	affected	<2026.1.5571

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-285

References (1)

https://advisories.octopus.com/post/2026/sa2026-03
Vendor Advisory

Link	Providers	Tags
https://advisories.octopus.com/post/2026/sa2026-03		Vendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner Octopus

Published Mar 17, 2026

Updated Mar 17, 2026

Reserved Feb 26, 2026

Link CVE-2026-3237

CISA Vulnrichment

Updated Mar 17, 2026

NVD

Status Analyzed

Modified Jun 17, 2026

Link CVE-2026-3237

Red Hat

Severity n/a

Public date n/a

Links CVE-2026-3237